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​​Custom Sapphire Optical Window 222mm×74mm×4mm Wear Resistance for Infrared windows

sapphire glass
September 03, 2025
Category Connection: Sapphire Optical Windows
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Blue Sapphire Optical Windows are primarily fabricated from ​​optical-grade sapphire (α-Al₂O₃ single crystal)​​. Here, "sapphire" refers not to natural gemstones but to high-purity, single-crystal aluminum oxide (Al₂O₃). Renowned for its ​​exceptional hardness (Mohs hardness of 9, second only to diamond)​​, outstanding wear resistance, ​​thermal stability (melting point ~2030–2050°C)​​, chemical inertness, and ​​broad spectral transmission (0.2 μm–5.5 μm)​​, sapphire is an indispensable material for extreme-environment optical applications.
Tags:
#sapphire glass lens #sapphire cover glass #sapphire glass window
Brief: Discover the Custom Sapphire Optical Window 222mm×74mm×4mm, designed for wear resistance and infrared applications. Made from high-purity sapphire (α-Al₂O₃ single crystal), this optical window offers exceptional hardness, thermal stability, and broad spectral transmission for extreme environments.
Related Product Features:
  • Ultra-high hardness with a Mohs rating of 9, ensuring scratch and abrasion resistance.
  • Broad spectral transmission from UV (170-330 nm) to mid-IR (up to 5.5 μm).
  • Extreme thermal stability, withstanding temperatures exceeding 1900°C.
  • Chemically inert, resistant to water, acids, and alkalis.
  • Mechanically robust, 5 times stronger than glass.
  • High transmittance with a clear aperture of over 90%.
  • Precision thickness tolerance of ±0.1 mm.
  • Surface roughness (Ra) as low as ≤0.2 nm for superior optical clarity.
Faqs:
  • Where are sapphire optical windows commonly used?
    Sapphire optical windows are widely used in high-temperature environments, laser systems, defense equipment (FLIR systems), and aerospace instrumentation due to their extreme durability and thermal stability.
  • What makes sapphire windows better than glass?
    Sapphire offers superior hardness (Mohs 9), chemical inertness, thermal resistance up to 2030°C, and broad transmission (UV to mid-IR), making it ideal for harsh applications where glass would degrade.
  • Can sapphire optical windows be customized?
    Yes, we accept customized sapphire optical windows. Please contact us with your specific requirements for size, thickness, and other parameters.
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